KP Bolt thread size

[Loophole]

Hello! Does anyone happen to know this bolt thread size and length off the top of their heads? Many thanks as always =)

[netsurferdude2]

8-32

Edit: 5/8" length I think

Edit Again:
If you use a set screw like that, maybe file off the threads. I have found that the thread can mar up the finish on the slot.

[Loophole]

Thank you kind sir!